23-21=x+21-21

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Solution for 23-21=x+21-21 equation:


Simplifying
23 + -21 = x + 21 + -21

Combine like terms: 23 + -21 = 2
2 = x + 21 + -21

Reorder the terms:
2 = 21 + -21 + x

Combine like terms: 21 + -21 = 0
2 = 0 + x
2 = x

Solving
2 = x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.
2 + -1x = x + -1x

Combine like terms: x + -1x = 0
2 + -1x = 0

Add '-2' to each side of the equation.
2 + -2 + -1x = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1x = 0 + -2
-1x = 0 + -2

Combine like terms: 0 + -2 = -2
-1x = -2

Divide each side by '-1'.
x = 2

Simplifying
x = 2

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